Overnight Full Stack Developer Jobs in Chicago, IL

Anticipated End Date: 2026-08-01

Position Title: Engineer Senior (Full Stack Developer)

Job Description:

Engineer Senior (Full Stack Developer)

Location: This role requires associates to be in-office 1 - 2 days per week, fostering collaboration and connectivity, while providing flexibility to support productivity and work-life balance. This approach combines structured office engagement with the autonomy of virtual work, promoting a dynamic and adaptable workplace. Alternate locations may be considered if candidates reside within a commuting distance from an office.

Please note that per our policy on hybrid/virtual work, candidates not within a reasonable commuting distance from the posting location(s) will not be considered for employment, unless an accommodation is granted as required by law.

The Engineer Senior (Full Stack Developer) is responsible for delivery of end-to-end applications, system development and maintenance on complex multi technology platforms within assigned client group, business unit or corporate department and utilizing various customer technology platforms.

• Design, develop, and implement robust, reusable full-stack applications with a focus on scalability, maintainability, and performance.
• Participate in and perform technical design reviews and code reviews to ensure high-quality, secure, and maintainable code.
• Define application scope, objectives, and technical specifications; develop and own technical enhancement backlogs and feature deliverables.
• Collaborate with cross-functional partners-including product, business, QA, and architecture-to understand requirements and translate them into technical solutions.
• Facilitate sessions for requirements clarification, technical design discussions, and troubleshooting complex issues.
• Work closely with product teams to plan and prioritize development work using disciplined agile practices with minimal supervision.
• Create and maintain technical documentation, including architectural diagrams, deployment procedures, and troubleshooting guides.
• Plan, schedule, and implement change deployments, framework upgrades, and maintenance activities.
• Investigate major incidents, summarize root causes, improve detection time, and drive faster, more resilient resolutions.
• Provide release and production support, ensuring systems are effectively monitored and deficiencies are proactively addressed.
• Assess current system status, support data and information planning, and ensure the stability of the technical development environment.
• Mentor team members, contribute to setting technical direction, and lead small to medium-sized projects as needed.
• Stay current with industry trends and emerging technologies to ensure adoption of best practices and continuous improvement.
• Support vendor/tool evaluations and collaborate across teams to align on standards and solutions.

• Requires an BA/BS degree in Information Technology, Computer Science or related field of study and a minimum of 5 years related experience; multi-dimensional platform experience; expert level experience with business and technical applications, or any combination of education and experience, which would provide an equivalent background.

• Full-Stack Development: 5 years of experience with .NET Core, C#, ASP.NET, MVC, Web API, and front-end frameworks such as Angular or React; working knowledge of Java/Spring Boot is a plus.
• API & Microservices: Strong experience designing and developing microservices and RESTful APIs with an understanding of SOA principles, HTTP fundamentals, and modern API design patterns.
• Deep understanding of software development principles, SOLID object-oriented design, design patterns, dependency injection, and clean architecture best practices.
• Cloud, DevOps & Deployment: Familiarity with cloud platforms (Azure or AWS), authentication/AD, key vaults, CI/CD pipelines (Jenkins, UrbanCode, Bitbucket, Jira), containerization and orchestration (OpenShift, Kubernetes)
• Databases & Data Technologies: Hands‑on experience with SQL Server, MongoDB, and Elasticsearch; conceptual understanding of ETL and data processing workflows.
• Experience with messaging platforms such as RabbitMQ, TIBCO, or similar technologies.
• Strong grasp of unit testing, integration testing, TDD concepts, automated test frameworks, and performance/load testing approaches.
• Knowledge of application monitoring, alerting techniques, troubleshooting, and performance optimization.
• Demonstrated ability to mentor others, lead small projects, troubleshoot complex issues, and excel in fast-paced agile environments with strong communication skills.
• Understanding of application security requirements, protocols, and frameworks is a plus.
• Experience in healthcare or insurance technology, familiarity with digital engagement trends, personalization, and modern analytical technology stacks is a plus.

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